It was some time ago now.
If I recall I popped off a plastic cover, (this was about the size of a business card) and behind that were the two 10mm bolts. It is a real awkward job, you have to really bend your arm to get it done.
So to answer your question I would suggest that they are the ones that are visible at the top of the boot mechanism, I don't remember seeing any other bolts when doing the job. If i had i'd have probably undone those as well in a desperate attempt.
Once you get it off, you will be able to see the fault, it was quite obvious,